Bone Thugs-n-Harmony (formerly known as B.O.N.E. Enterprises) is an American hip hop group composed of rappers Bizzy Bone, Wish Bone, Layzie Bone, Krayzie Bone, and Flesh-n-Bone. The group was signed to fellow American rapper Eazy-E‘s Ruthless Records in late 1993, when they debuted with their EP Creepin on ah Come Up. The EP included their breakout hit single "Thuggish Ruggish Bone". In 1995, the group released its second album E. 1999 Eternal, which included hits "1st of tha Month" and "East 1999". Their hit song "Tha Crossroads", a tribute to then-recently deceased mentor Eazy-E, won a Grammy Award in 1997.
The Art of War, the group's third album, was released in 1997. In 2000, BTNHResurrection reached platinum status in the US in one month, while 2002's Thug World Order received more moderate sales and promotion, going gold and peaking at No. 3 on the Top R&B/Hip-Hop Albums chart. Following that album, the group went on hiatus from their label and released their sixth studio album, Thug Stories, independently in 2006. In 2007, they had another major-label release, Strength & Loyalty, on American producer Swizz Beatz's label Full Surface Records. Bone Thugs-n-Harmony returned with their 2010 album Uni5: The World's Enemy, released by their own record label, BTNH Worldwide, with distribution by Warner Bros.
The group is regarded as one of the greatest hip hop acts of all time. Bone Thugs-n-Harmony is the only group that has worked with renowned American rappers 2Pac, the Notorious B.I.G., Eazy-E, and Big Pun while they were all still alive. About.com ranked them No. 12 on its list of the 25 Best Rap Groups of All Time, and MTV called them "the most melodic hip-hop group of all time."